Skip to content

Instantly share code, notes, and snippets.

Christian Stade-Schuldt Tafkas

Block or report user

Report or block Tafkas

Hide content and notifications from this user.

Learn more about blocking users

Contact Support about this user’s behavior.

Learn more about reporting abuse

Report abuse
View GitHub Profile
@Tafkas
Tafkas / computeSunrise.js
Last active Sep 28, 2019
A simple sunrise-sunset algorithm taken from http://williams.best.vwh.net/sunrise_sunset_algorithm.htm in JavaScript
View computeSunrise.js
function computeSunrise(day, sunrise) {
/*Sunrise/Sunset Algorithm taken from
http://williams.best.vwh.net/sunrise_sunset_algorithm.htm
inputs:
day = day of the year
sunrise = true for sunrise, false for sunset
output:
time of sunrise/sunset in hours */
View berlin_marathon_participants_2014.py
#!/usr/bin/env python
# encoding: utf-8
"""
berlin_marathon_participants_2014.py
Created by Christian Stade-Schuldt on 2013-11-12.
"""
import urllib
import json
@Tafkas
Tafkas / berlin_marathon_2014_participants.R
Created Nov 13, 2013
Distribution of Birth Year and Top 10 Participating Nations in Berlin Marathon 2014
View berlin_marathon_2014_participants.R
Distribution of Birth Year and Top 10 Participating Nations in Berlin Marathon 2014
setwd("~/")
bm <- read.csv("BerlinMarathon2014.csv", header=T)
library(ggplot2)
p <- ggplot(bm, aes(birth_date, ..density..))
p <- p + geom_histogram(binwidth=1, colour = "black", fill = "lightblue") + geom_density()
p + ggtitle("Distribution of Birth Year for the Berlin Marathon 2014") + xlab("Year of Birth") + ylab("Density")
# get the top 10 particpating nations
@Tafkas
Tafkas / xport-temp.sh
Created Nov 13, 2013
Export RRDTool database to xml
View xport-temp.sh
#!/usr/bin/env bash
rrdtool xport -s now-3h -e now --step 300 \
DEF:a=/home/pi/weather/temperatures.rrd:temps1:AVERAGE \
DEF:b=/home/pi/weather/temperatures.rrd:temps2:AVERAGE \
DEF:c=/home/pi/weather/temperatures.rrd:temps3:AVERAGE \
DEF:d=/home/pi/weather/temperatures.rrd:temps4:AVERAGE \
DEF:e=/home/pi/weather/temperatures.rrd:temps5:AVERAGE \
DEF:f=/home/pi/weather/temperatures.rrd:temps6:AVERAGE \
XPORT:a:"Livingroom" \
@Tafkas
Tafkas / tmpdb.sh
Created Nov 13, 2013
Create RRDTool database for storing temperature values
View tmpdb.sh
#!/usr/bin/env bash
rrdtool create temperatures.rrd \
--start N \
--step 300 \
DS:temps1:GAUGE:1200:-40:50 \
DS:temps2:GAUGE:1200:-40:50 \
DS:temps3:GAUGE:1200:-40:50 \
DS:temps4:GAUGE:1200:-40:50 \
DS:temps5:GAUGE:1200:-40:50 \
@Tafkas
Tafkas / fetch_wde_data.sh
Created Nov 13, 2013
Fetch data from USB-WDE1 receiver and write it to RRDTool database
View fetch_wde_data.sh
#!/usr/bin/env bash
# Receive weather data from remote USB WDE1 and store it into database
# Loop forever to read data from USB WDE1
socat / dev/ttyUSB0, B9600 STDOUT | \
while read line
do
if [["$ {line%% *}" == '$ 1']] then
# Format data
"{? line # 1, 1,} $" tmp = `echo | tr ',' ','`.
@Tafkas
Tafkas / createhighchartfromxml.js
Last active Feb 23, 2017
Parse xml file generated from RRDTool export and create Highchart series
View createhighchartfromxml.js
$.ajax({
type: "GET",
url: "data/temperature24h.xml",
dataType: "xml",
success: function(xml) {
var series = []
//define series
$(xml).find("entry").each(function() {
var seriesOptions = {
@Tafkas
Tafkas / activity_extractor.py
Created Nov 17, 2013
Extracts duration from gpx and tcx files for further processing
View activity_extractor.py
#!/usr/local/bin/python
# encoding: utf-8
"""
activity_extractor.py
Created by Christian Stade-Schuldt on 2013-10-29.
"""
import os
from lxml import etree as et
from datetime import timedelta, datetime
@Tafkas
Tafkas / goeuro_test.py
Created Nov 21, 2013
Python solution to the GoEuroTest
View goeuro_test.py
#!/usr/bin/env python
# encoding: utf-8
"""
Created by Christian Stade-Schuldt on 2013-11-12.
"""
import sys
import os
import csv
import json
@Tafkas
Tafkas / rmsle.py
Created Nov 25, 2013
Compute the Root Mean Squared Log Error for hypothesis h and targets y
View rmsle.py
import numpy as np
def rmsle(h, y):
"""
Compute the Root Mean Squared Log Error for hypthesis h and targets y
Args:
h - numpy array containing predictions with shape (n_samples, n_targets)
y - numpy array containing targets with shape (n_samples, n_targets)
"""
You can’t perform that action at this time.